baber/WOPTO huggingface dataset:
Patent GB-1462212-A (GB)
Title: Direct-positive photographic material
IPC: G03C1/00
Filed: 1974-06-24
Abstract: 1462212 Photographic direct positive silver halide materials AGFA-GEVAERT AG 24 June 1974 [28 June 1973] 27846/74 Heading G2C Photographic material for producing direct positive images by fogging development contains at least one silver halide emulsion layer containing unfogged hetero disperse silver halide grains i.e. at least 10 wt. per cent of the grains have a diameter which deviates by at least 40% from the average grain diameter, the said grains being unsensitized or only slightly chemically sensitized on their surface and having a layered grain structure comprising a core of at least 50 mol. % silver bromide and an intermediate or outer layer of at least 20 mol. % silver chloride, the total silver chloride in the grain as a whole being less than 30 mol. %.
Patent GB-639338-A (GB)
Title: Improvements in flow-meters
IPC: G01L7/18
Filed: 1947-10-17
Abstract: 639,338. Measuring fluid flow photo-electrically. BRITISH CELANESE, Ltd. Oct. 17, 1947, No. 27860. Convention date, Oct. 17, 1946. [Class 40 (iii)] In a device for measuring the velocity of a liquid flow by means of a manometer gauge which indicates the pressure difference at two points in the flow, the liquid in the manometer 10 cuts off part of a parallel beam of light from a lamp 5 situated in a parabolic reflector, to a photo-cell 12 situated in a similar reflector. Since, however, the velocity is proportional to the square root of the pressure difference, a screen 7 is situated in the path of the light having an aperture so shaped as to render the photo-cell response directly proportional to the liquid velocity. The output of the photo-cell may be amplified electronically or integrated over a period to give total flow.
Patent GB-503789-A (GB)
Title: Improvements relating to retractable undercarriages for aircraft
IPC: B64C25/14
Filed: 1937-10-13
Abstract: 503,789. Retractable undercarriages for aircraft. DOWTY, G. H. Oct. 13, 1937, No. 27867. [Class 4] An aircraft undercarriage in which a leg or equivalent supporting the landing element is retractable by swinging backward and upwards, comprises resilient means adapted and arranged to accumnlate energy from substantially the commencement of retraction movement and during that part of the movement which is substantially assisted aerodynamically and to expend such energy during the remaining part of the movement in which a greater mechanical effort is 'required for retraction. The accumulation and expenditure of energy occur conversely during extension. In one form, Fig. 1, a pivoted wheel-carrying leg 1 is retractable by a single-acting hydraulic jack 7. 8 pivoted to the aircraft and to the part 3 of a breakable strut or radius rod 3, 4, pivoted to the aircraft and leg 1 at 3A and 4A respectively. The resilient means comprises a piston 13 and cylinder 12 pivoted to the leg and part 3 respectively, the cylinder 12 containing air or a compression spring. During retraction or extension the piston passes a dead centre when it is aligned with the part 3. The air in the cylinder may be under initial pressure so that the parts 3, 4 are maintained in alignment in the extended position. In another form, Fig. 4, the pivoted shock-absorbing leg 40, 41 constitutes the resilient means, and a cable 44, attached to the aircraft and to the part 41, is provided so that the leg is compressed during retraction or extension until it is aligned with the cable, and afterwards extends. Means may be provided whereby any energy-dissipating device in the leg is inoperative at the rate of movement occurring during retraction or extension. The jack may be double-acting and fitted with an emergency extension device. Suitable means may be provided to lock the undercarriage in the extended and retracted positions. According to the Provisional Specification, the upper end of the cable may be connected to the point of articulation of the radius rod.
Patent GB-363007-A (GB)
Title: Improvements in and relating to sound reproducing instruments
IPC: H04R1/20
Filed: 1930-09-19
Abstract: 363,007. Sound-reproducers. WEEDON, J. H., 80, Lonsdale Avenue, East Ham, London. Sept. 19, 1930, No. 28050. [Class 40 (iv).] A sound-reproducing device is coupled to a diaphragm or diaphragms by a rod 1 having an adjustable universal joint, the distance between the reproducing device and the diaphragm being adjustable. The rod 1 is preferably screw threaded so that nuts may be used to adjust the position of washers gripping the diaphragm, or the rod may be plain and the conical washers fixed by set screws or a split chuck. The rod terminates in a ball 2 held in a member 3 having a ball 4 engaging with a sleeve 6 to which the sound-reproducing device is attached. Screws 5 serve to tighten the ball and socket joints.
Patent GB-603549-A (GB)
Title: Improvements in the construction of dandy rolls for paper manufacture
IPC: D21F1/46
Filed: 1945-10-24
Abstract: 603,549. Making rollers. TROTMAN, W. E. K. Oct. 24, 1945, No. 28072. [Classes 83 (ii) and 83 (iv)] [Also in Group VIII] Soldering.-An assembly of rods or tubes 11 passing through rings or segments 10 spaced by collars or flanges &c. is bonded to form the framework of a dandy roll of a paper-making machine, as by melting solder sleeves or collars in an oven or muffle, or by bolting, riveting or spot welding &c.
Patent GB-306567-A (GB)
Title: Machine for decorticating trees or other objects or performing similar operations
IPC: B23Q5/40
Filed: 1927-10-21
Abstract: 306,567. Lagus, R. Oct. 21, 1927. Lathes.-A tree trunk 35 or like object is supported by toothed wheels 38 on a rotating shaft 40 and toothed wheels 36 loose on a shaft 41, whilst a rotating decorticator 45 is mounted in a carrier 12 which is traversed along the length of the trunk by means of screw shafts 8, 11 which are in turn engaged by a doublehalf-nut 14 mounted in a recess in the carrier and transferred from its uppermost to its lowermost position at the right hand end of its travel by the action of a stop 33 which engages a trip lever 34 and releases the lower end of a lever 22 which has an arm 21 connected to the nut 14. At the left-hand end of its travel the nut is returned to the disengaged position bv a stop 32 and must be restarted by means of a handle 20.
Patent GB-351835-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D17/26
Filed: 1930-09-19
Abstract: 351,835. Steam turbine plant. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Grube, L. E. ; 62, Colonial Avenue, and Warner, D. F. ; 168, Broadway, both in Lynn, and Ericson, F. R. ; 10, Mason Street, Beverly, both in Massachusetts, U.S.A.) Sept. 19, 1930, No. 28092. Convention date, Sept. 19, 1929. [Classes 57, 110 (iii) and 122 (iv).] Relates to the control of a stand-by turbinedriven generator set which normally carries no load, but is held ready to be put on the line in case of emergency in the power house. In the arrangement shown in the Figure, the bus-bars 6 from which the auxiliaries, such as condenser and feed-water pumps, are driven, are normally connected through a reverse current switch 9 to the main bus-bars 8. The stand-by turbine 1 is connected to an electric machine 4 which may act as generator or motor, and is controlled by an emergency stop valve 10 and a governor-influenced regulating valve 51 so that either, (1) the turbine set, when shut down, may be started up quickly to feed the bus-bars 6 should the supply from the main bus-bars fail, or (2) the turbine, if running idle (the machine 4 acting as a motor) may be caused automatically to take on the load of the bus-bars 6 if the frequency falls below a predetermined value. The stop valve 10 which is arranged to be tripped by connections 14, 16 with the emergency governor in the usual way, and is under the control of hand-operated gear 17, 20, is arranged so that it may be re-opened by an oil-relay piston 22. This piston is under control of a pilot valve 28 which has a drain pipe 29 to the oil tank 30 and a pressure pipe 31 which is supplied by one or other of the pumps 34, 72. The pump 34 is driven by the turbine 1 and the pressure set up by it normally is in excess of that set up by the pump 72, the driving turbine 76 of which is cut in automatically. The regulating valve 51 of the turbine 1 is controlled by an oil-relay piston 59, the pilot valve 62 of which is positioned by a speed governor 71. A cam 48 on the shaft of this governing device is arranged so that, in a predetermined position, a lever 44 will be tripped, and the pilot valve 28 of the stop-gear will be actuated. The admission of steam to the turbine 76 which drives the pump 72 providing the second oil supply for the relay motors is controlled by a valve 84 responsive to the pressure set up by the main oil pump 34, and by a valve 79 controlled by an electromagnet 80. If the turbine 1 is stopped, a switch 83, which may be remote, is closed and the turbine 76 is started up to establish oil pressure in the regulating system in order to start turbine 1. A switch 5a is then thrown over to connect the electric machine 4 with the auxiliary bus-bars 6.
Patent GB-1462164-A (GB)
Title: Catadioptric optical system
IPC: G02B13/02
Filed: 1975-07-03
Abstract: 1462164 Reflecting objective PERKINELMER CORP 3 July 1975 [22 July 1974] 28111/75 Heading G2J A catadioptric optical system, e.g. for use as a long focal length photographic objective, comprises three spaced refractive elements 17, 15, 13, of which the front element 17 has a convex front surface and a convex rear surface, the intermediate element 15 has a concave front surface, and the rear element 13 has a convex rear surface, and two spherical reflective surfaces, one, 11, annular and convergent, and the other, 12, circular and divergent, being located on the internal rear surface of element 13 and on a central concave portion of the front surface of element 17. As shown, elements 15, 13 are annular, but in two other embodiments. Figs. 1, 2 (not shown) element 15 is complete, and the surface 12 is mounted on a protruding portion (19) of element 17. The path of a light ray 21 through the system is shown, lenses 31..37 focusing the light on a television pick-up tube 39. The system of Fig. 1 has an axially adjustable support (30) carrying a lens (23) and doublet (25) to increase the focal length, and elements 13, 15, 17, (19, 23) are made of the same glass. In the system of Fig. 2, the elements 13, 15, 17, (19) are of different glasses with nearly equal refractive indices but different dispersions. Optical data are given.
Patent GB-279501-A (GB)
Title: Improvements in or relating to anodes for gas discharge vessels
IPC: H01J17/24
Filed: 1927-10-22
Abstract: 279,501. Siemens & Halske Akt.- Ges. Oct. 23, 1926, [Convention date]. Vacuum tubes.-In a gas discharge rectifier, the anode is made entirely or partly of refractory conducting material, for instance, tantalum or molybdenum, which absorbs impurities, such as water vapour, nitrogen, or carbonic acid at high temperatures, and is so dimensioned that, during working, it attains the gas-absorption temperature. The cathode operates at incandescence and the filling is preferably of rare gases.
Patent GB-1513056-A (GB)
Title: Fibrous packings
IPC: D01G25/00
Filed: 1975-07-02
Abstract: 1513056 Making cellulose wadding; increasing the rate of uptake of water by cellulose wadding J T McCULLINS 28 June 1976 [2 July 1975] 28152/75 Headings D1N and DIP Cellulose wadding is made by applying a solution of surface active agent to a cellulose web, drying the web then disintegrating it and depositing the so formed fibrous material on a carrier web f'. Suitable surfactants are quaternary ammonium salts or a mixture of such salts e.g. benzyl trimethyl ammonium chloride or a mixture of octyl decyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride and didecyl dimethyl ammonium chloride. The surfactant can also be an amine derived from a C 10  to C 18  fatty acid, or an anionic or non-ionic agent. The solvent may be water and/or an alcohol e.g. methanol, ethanol, iso-propanol, n-propanol, iso-butanol or mixtures thereof. Suitable concentrations for the solution are disclosed. The web is dried at c by hot air, or by infra-red or micro wave radiation. The carrier web f<SP>1</SP> on which the fibrous material is deposited may be paper tissue or polyethylene. A similar web f<SP>2</SP> may be laid on top of the fibre. A device g applies adhesive to the edges of web f<SP>2</SP> and folds web f<SP>1</SP> over on them. The wadding is cut into lengths by a guillotine i and laid on a sheet of hydrophobic plastics material from a roll h (Fig. 2). A further adhesive applicator and edge folder l precedes a guillotine m which cuts the wadding into finished diapers n. The wadding may also be made into sanitary towels and is said to have a superior rate of moisture absorption.
Patent GB-631552-A (GB)
Title: Improvements in or relating to position indicating devices for manually resettable electromagnetic control and like mechanisms
IPC: H01H9/16
Filed: 1947-10-21
Abstract: 631,552. Valve accessories. MAY, P. (Robertshaw Thermostat Co.). Oct. 21, 1947, No. 28154. [Class 135] [Also in Group XXXVII] The resetting button 52 of an automaticallyreleased valve has a cam portion 50 adapted to rotate a lever 32 about a pin 34 and thereby bring an " on" indication beneath a window 48 in place of an " off " indication. The button carries an armature 20 which cooperates with an energized horse-shoe magnet 14 to hold the button in its depressed position against the action of a return spring 26 ti!! the current fails. The lower end 24 of the button operates the valve.
Patent GB-422007-A (GB)
Title: Improvements in or relating to electric tumbler switches
IPC: H01H23/14
Filed: 1933-10-12
Abstract: 422,007. Making electric switches. BENTLEY, H. L., and ASH, A. G., Magnet Works, Landor Street, Birmingham. Oct. 12, 1933, No. 28158. [Classes 83 (ii) and 83 (iv)] [See also Group XXXVII] Cupping.-The dolly of a tumbler switch is manufactured from a sheet metal blank by a series of pressing or like operations which produce a hollow cup-shaped shell comprising a finger portion a, a dome b and actuating lugs c. Fig. 4 shows the fourth stage in the cupping. The next step produces the portion a and is followed by a trimming operation producing the lugs c. Finally the lugs are bent into parallelism and slotted and the pivot holes are punched in the dome.
Patent GB-1217457-A (GB)
Title: Improvements in or relating to packaging apparatus
IPC: G01M3/22
Filed: 1969-06-04
Abstract: 1,217,457. Packaging. SAFEWAY STORES Inc. 4 June, 1969 [3 March, 1969], No. 28226/69. Heading B8C. A method of packaging a product between first and second sheets, 12, 31 of heat sealable material comprises moving the first sheet 12 along a path in steps, heating it at stations b, c, pressure forming it into a series of cups at station d, filling each cup at station d with product from a loader 22, forming slits in the sheet 12 between the cups at station g, sealing the second sheet 31 to the first sheet 12 around but not entirely around, the periphery of each cup at station h, evacuating each package and then filling it with a preservative gas such as carbon dioxide and/or nitrogen and a tracer gas such as octafluorcyclobutane and completely sealing the package at station i, subjecting each package to a pressure different from its internal pressure and sensing for the escape of gas from the package at station k and marking defective packages at station l. The sheet 12 is formed into cups by an endless chain of trays 17 and three gaskets 26, 27, 28 which are individually coupled to a vacuum supply; and lesser vacuum levels are applied to the gaskets 26, 27 prior to application of vacuum to the basket 28. The apparatus at station i for evacuating the package and filling it with preservative gas comprises an element 39 which presses the upper sheet 31 downwardly, a conduit 43 in communication with the package and a valve 44 for selectively supplying vacuum or preservative gas. The apparatus at station k for detecting a leaky package comprises a chamber 48 enclosing the package and evacuated through a passage 52. A gas detecting probe 53 or a tube leading to gas sensing equipment generates an electric signal across conductors 54 and a delay circuit 56 delays the signal for an interval substantially equal to the stepping time of the packages. Alternatively the preservative gas may be forced out of a leaky package by a resilient porous pad on the end of a piston, Figs. 4, 5 (not shown). The marking station l includes an electromagnetic device 57 connected to the delay circuit 56 and a marking member 62 located above the package. Apparatus for rejecting the defective packages may be provided. The packages are separated by a knife 66 and suction is applied at station r to withdraw the packages from the trays 17 and place them on a conveyer 72. A plurality of packages in an overwrapping container may be tested for leakage of the preservative gas by a method similar to that described for a single package.
Patent GB-665356-A (GB)
Title: Improvements in oil burners
IPC: F23D11/30
Filed: 1948-11-01
Abstract: 665,356. Oil burners. AKTIEBOLAGET GOTAVERKEN. Nov. 1, 1948 [Nov. 19, 1947], No. 28335/48. Class 75(i) In an oil burner comprising an atomizer 3 and a rotatable screening and catching device 17 by means of which a controllable portion of the fuel jet is prevented from entering the combustion zone outside the burner, the screening device is provided with a central opening 8 whose edges extend in the direction of the axis of rotation to form a tube whose end remote from the atomizer is smoothly rounded to merge outwardly into a conical drum, the diameter of which increases rearwardly. The opening 8 has a conical wall 12 which converges towards a point on the axis of rotation located ahead of the atomizer 3. Oil adhering to wall 12 passes along the outer conical face 16 of the screening device, where it is thrown outwardly into the stationary tube 6, to be returned to the source, through tube 10. Oil caught in the screening device 17 is returned through orifices 9, stationary tube 6, and pipe 10. The stationary tube 6 is provided with a member 6a which may extend to, or beyond the rounded portion 14 of the screening device 17. The atomizing nozzle 3 is axially adjustable.
Patent GB-445423-A (GB)
Title: Improvements in and relating to talking machine reproducing devices
IPC: H04R11/08
Filed: 1934-10-03
Abstract: 445,423. Phonographic reproducers. HOLMAN, H. E., 4, Fairway Avenue, Garden City, Yiewsley, Middlesex. Oct. 3, 1934, No. 28351. [Class 40 (iv)] In a phonographic reproducing device an armature is supported in such a manner by a resilient blade member that the said armature can rotate about its instantaneous axis of oscillation and is adapted to carry a reproducing stylus, the arrangement being such that the point of the stylus is free to move in a direction transverse to the direction of travel of the sound line of the record, thereby subjecting said blade member to torsional stress, but is prevented by the blade member from moving appreciably in the said direction of travel. The pick-up comprises a U-shaped permanent magnet 1 having a U-shaped laminated polepiece 2 of which the limbs, chamfered at their ends, project towards each other to form a circular air gap. A speech coil 3 is formed on a bobbin 4 having a central cylindrical hole is held between the limbs of the polepiece 2. The armature 5 is formed by a cylindrical steel tube having a rounded closed end and is provided at its open end with a V-shaped slot. The needle 6 is arranged to be a close fit in the armature 5 and is retained without clamping screws. One end of a phosphor bronze strip 7 of a depth equal to approximately half that of the armature 5 is wrapt around and sweated on the armature near its rounded end, whilst the other end is passed through a slot in a brass liner 9 for the speech coil bobbin 4 and is bent over at right angles. The liner 9 is a close fit in the hole of the bobbin and is packed with rubber or other resilient damping material 10. The armature is disposed so that its rounded end projects above the upper circular air gap, and the whole of the slotted portion projects below the lower air gap. The armature may be supported by two diametrically opposed torsion strips 7.
Patent GB-436763-A (GB)
Title: Improvements in or relating to fuse wire and fuse wire leads for electric mine fuses
IPC: F42B3/11
Filed: 1934-10-03
Abstract: 436,763. Conductors. DYNAMIT-AKTGES. VORM. A. NOBEL & CO., Troisdorf, Germany. Oct. 3, 1934, Nos. 28358 and 28359. Convention dates, Oct. 3, 1933 and Oct. 16, 1933. Drawings to Specification. [Class 36] Fuse wires or fuse wire leads or both, for electric mine fuses, are insulated with a substance comprising polymerizates of vinyl chloride, or after-chlorinated such polymerizates. The insulation may comprise mixed polymerizates of vinyl chloride and other vinyl compounds such as acrylic acid esters or vinyl acetate or after-chlorinated such mixed polymerizates ; softening agents such as tricresyl phosphate, tributyl phosphate or dibutyl phthalate may also be included. The insulation may be applied in a seamless layer by means of a tubing press, with heating. Reference has been directed by the Comptroller to Specification 422,957.
Patent GB-1423470-A (GB)
Title: Open-end spinning frame
IPC: D01H4/42
Filed: 1974-06-26
Abstract: 1423470 Stop motions; spindle drive and brake PENZENSKY NAUCHNO - ISSLEDOVATELSKY EXPERIMENTALNO KONSTRUKTORSKY INSTITUT PRYADILNYKH MASHIN 26 June 1974 28408/74 Heading DID  An open end spinning frame has a stop motion acting on the feed roller, twister 3 and winding device 6, comprising displaceable cylinder 41 coaxially disposed about a displaceable bar 38 controlled by a yarn tension sensing lever 7. The bar 38 and cylinder 41 are displaced (downwards) simultaneously to one end position to terminate action of the feed roller, twister 3 and winding device 6 and displaced (upwards) sequentially to the other end position to initiate operation of the feed roller, twister 3 and winding device. The bar 38 is provided with stops 45, 46 for controlling the feed roller and twister 3 and the cylinder is provided with a stop 58 for controlling the winding device 6. As shown, when the yarn breaks or slackens sensing lever 7 operates an electromagnet 32 so that the bar 38 and cylinder 41 move downwardly to (a) de-clutch the drive to the feed roller via lever 48, (b) retract the drive belt from the twister 3 via lever 24 and (c) move the cylinder 41 downwardly so stop 58 applies brake 36a to the drive drum of the winding device. When spinning is to be resumed, the yarn end is introduced into the rotor and lever 7 returns to the normal operation position. Handle 40 is then swung upwardly to move the bar 38 upwards so that (a) the feed roller clutch is engaged via lever 48, (b) the drive belt is returned to bear on the twister 3 and (c) a catch (Fig. 8 not shown) retaining the cylinder 41 in the lower position is eventually released to permit the cylinder to move upwardly and thus disengage the brake on the winding device. In an alternative embodiment, the electromagnet 32 may be replaced by a pneumatic or hydraulic cylinder (Fig. 7 not shown).
Patent GB-1534994-A (GB)
Title: Process for hardening briquettes
IPC: C10L5/28
Filed: 1977-07-07
Abstract: 1534994 Hardening briquettes CENTRO SPERIMENTALE METALLURGICO SpA 7 July 1977 [4 Aug 1976] 28420/77 Heading C5G Briquettes formed by mixing semi-coke with a carbonaceous binder such as pitch are hardened by heating in an inert atmosphere (e.g. nitrogen) in a vertical oven at between 300 and 400‹ C. for between 35 and 150 minutes.